YES: Harness wire is OK.
AUTO IDLE TO SYSTEM
NO: Harness wire is
Disconnect 16-pin harness connector from monitor controller, and 22-pin harness
connector D from engine and pump controller.
Measure continuity between pin 13 of monitor controller harness connector and pin 6
of engine and pump controller harness connector D.
YES: Engine RPM dial is
ENGINE RPM DIAL (R10)
OK. Go to next check.
NO: Engine RPM dial has
Disconnect harness connector from engine mode and rpm control unit.
Measure resistance from engine mode and RPM control unit terminal 5 to terminal 7,
and from terminal 5 to terminal 6.
Is 5000 500 ohms measured from terminal 5 to terminal 7, and less than that from
terminal 5 to terminal 6?